New York investor Irving Langer and his wife Miriam Langer paid $21 million for a penthouse at the newly completed Fendi Château Residences building in Surfside.

Langer is founder and CEO of Brooklyn-based E&M Associates, a multifamily investment firm. Records show the Langers financed their purchase of penthouse 3 with a $10.5 million mortgage from First Republic Bank, which matures in 2046.

The Château Group completed the 12-story, 58-unit building at 9365 Collins Avenue in September.

Units range in size from three bedrooms with 3,300 square feet to three penthouses with more than 7,000 square feet, each, with a 4,000-square-foot private rooftop pool deck and summer kitchens.

The beachfront development was designed by Arquitectonica and includes pools, a Jacuzzi, 12 private cabanas, a restaurant and bar, a fitness center and a spa, kids’ club, private theater, a private dining room, wine cellar and Shabbat elevators.

Fendi Château is the first luxury condo tower to open in Surfside this cycle. Other high-profile buyers so far include a pair of Brazilian software firm executives, private equity investor Thompson Dean, Spanish architect Octavio Mestre and Russian tourism minister Amir Gallyamov.